The Tor Browser: gfx/angle/src/libGLESv2/renderer/SwapChain11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/SwapChain11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/SwapChain11.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 #include "precompiled.h"
 //
 // Copyright (c) 2012-2013 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // SwapChain11.cpp: Implements a back-end specific class for the D3D11 swap chain.
 #include "libGLESv2/renderer/SwapChain11.h"
 #include "libGLESv2/renderer/renderer11_utils.h"
 #include "libGLESv2/renderer/Renderer11.h"
 #include "libGLESv2/renderer/shaders/compiled/passthrough11vs.h"
 #include "libGLESv2/renderer/shaders/compiled/passthroughrgba11ps.h"
 namespace rx
 {
 SwapChain11::SwapChain11(Renderer11 *renderer, HWND window, HANDLE shareHandle,
                          GLenum backBufferFormat, GLenum depthBufferFormat)
     : mRenderer(renderer), SwapChain(window, shareHandle, backBufferFormat, depthBufferFormat)
 {
     mSwapChain = NULL;
     mBackBufferTexture = NULL;
     mBackBufferRTView = NULL;
     mOffscreenTexture = NULL;
     mOffscreenRTView = NULL;
     mOffscreenSRView = NULL;
     mDepthStencilTexture = NULL;
     mDepthStencilDSView = NULL;
     mQuadVB = NULL;
     mPassThroughSampler = NULL;
     mPassThroughIL = NULL;
     mPassThroughVS = NULL;
     mPassThroughPS = NULL;
     mWidth = -1;
     mHeight = -1;
     mSwapInterval = 0;
     mAppCreatedShareHandle = mShareHandle != NULL;
     mPassThroughResourcesInit = false;
 }
 SwapChain11::~SwapChain11()
 {
     release();
 }
 void SwapChain11::release()
 {
     if (mSwapChain)
     {
         mSwapChain->Release();
         mSwapChain = NULL;
     }
     if (mBackBufferTexture)
     {
         mBackBufferTexture->Release();
         mBackBufferTexture = NULL;
     }
     if (mBackBufferRTView)
     {
         mBackBufferRTView->Release();
         mBackBufferRTView = NULL;
     }
     if (mOffscreenTexture)
     {
         mOffscreenTexture->Release();
         mOffscreenTexture = NULL;
     }
     if (mOffscreenRTView)
     {
         mOffscreenRTView->Release();
         mOffscreenRTView = NULL;
     }
     if (mOffscreenSRView)
     {
         mOffscreenSRView->Release();
         mOffscreenSRView = NULL;
     }
     if (mDepthStencilTexture)
     {
         mDepthStencilTexture->Release();
         mDepthStencilTexture = NULL;
     }
     if (mDepthStencilDSView)
     {
         mDepthStencilDSView->Release();
         mDepthStencilDSView = NULL;
     }
     if (mQuadVB)
     {
         mQuadVB->Release();
         mQuadVB = NULL;
     }
     if (mPassThroughSampler)
     {
         mPassThroughSampler->Release();
         mPassThroughSampler = NULL;
     }
     if (mPassThroughIL)
     {
         mPassThroughIL->Release();
         mPassThroughIL = NULL;
     }
     if (mPassThroughVS)
     {
         mPassThroughVS->Release();
         mPassThroughVS = NULL;
     }
     if (mPassThroughPS)
     {
         mPassThroughPS->Release();
         mPassThroughPS = NULL;
     }
     if (!mAppCreatedShareHandle)
     {
         mShareHandle = NULL;
     }
 }
 void SwapChain11::releaseOffscreenTexture()
 {
     if (mOffscreenTexture)
     {
         mOffscreenTexture->Release();
         mOffscreenTexture = NULL;
     }
     if (mOffscreenRTView)
     {
         mOffscreenRTView->Release();
         mOffscreenRTView = NULL;
     }
     if (mOffscreenSRView)
     {
         mOffscreenSRView->Release();
         mOffscreenSRView = NULL;
     }
     if (mDepthStencilTexture)
     {
         mDepthStencilTexture->Release();
         mDepthStencilTexture = NULL;
     }
     if (mDepthStencilDSView)
     {
         mDepthStencilDSView->Release();
         mDepthStencilDSView = NULL;
     }
 }
 EGLint SwapChain11::resetOffscreenTexture(int backbufferWidth, int backbufferHeight)
 {
     ID3D11Device *device = mRenderer->getDevice();
     ASSERT(device != NULL);
     // D3D11 does not allow zero size textures
     ASSERT(backbufferWidth >= 1);
     ASSERT(backbufferHeight >= 1);
     // Preserve the render target content
     ID3D11Texture2D *previousOffscreenTexture = mOffscreenTexture;
     if (previousOffscreenTexture)
     {
         previousOffscreenTexture->AddRef();
     }
     const int previousWidth = mWidth;
     const int previousHeight = mHeight;
     releaseOffscreenTexture();
     // If the app passed in a share handle, open the resource
     // See EGL_ANGLE_d3d_share_handle_client_buffer
     if (mAppCreatedShareHandle)
     {
         ID3D11Resource *tempResource11;
         HRESULT result = device->OpenSharedResource(mShareHandle, __uuidof(ID3D11Resource), (void**)&tempResource11);
         if (FAILED(result))
         {
             ERR("Failed to open the swap chain pbuffer share handle: %08lX", result);
             release();
             return EGL_BAD_PARAMETER;
         }
         result = tempResource11->QueryInterface(__uuidof(ID3D11Texture2D), (void**)&mOffscreenTexture);
         tempResource11->Release();
         if (FAILED(result))
         {
             ERR("Failed to query texture2d interface in pbuffer share handle: %08lX", result);
             release();
             return EGL_BAD_PARAMETER;
         }
         // Validate offscreen texture parameters
         D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0};
         mOffscreenTexture->GetDesc(&offscreenTextureDesc);
         if (offscreenTextureDesc.Width != (UINT)backbufferWidth
             || offscreenTextureDesc.Height != (UINT)backbufferHeight
             || offscreenTextureDesc.Format != gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat)
             || offscreenTextureDesc.MipLevels != 1
             || offscreenTextureDesc.ArraySize != 1)
         {
             ERR("Invalid texture parameters in the shared offscreen texture pbuffer");
             release();
             return EGL_BAD_PARAMETER;
         }
     }
     else
     {
         const bool useSharedResource = !mWindow && mRenderer->getShareHandleSupport();
         D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0};
         offscreenTextureDesc.Width = backbufferWidth;
         offscreenTextureDesc.Height = backbufferHeight;
         offscreenTextureDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat);
         offscreenTextureDesc.MipLevels = 1;
         offscreenTextureDesc.ArraySize = 1;
         offscreenTextureDesc.SampleDesc.Count = 1;
         offscreenTextureDesc.SampleDesc.Quality = 0;
         offscreenTextureDesc.Usage = D3D11_USAGE_DEFAULT;
         offscreenTextureDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
         offscreenTextureDesc.CPUAccessFlags = 0;
         offscreenTextureDesc.MiscFlags = useSharedResource ? D3D11_RESOURCE_MISC_SHARED : 0;
         HRESULT result = device->CreateTexture2D(&offscreenTextureDesc, NULL, &mOffscreenTexture);
         if (FAILED(result))
         {
             ERR("Could not create offscreen texture: %08lX", result);
             release();
             if (d3d11::isDeviceLostError(result))
             {
                 return EGL_CONTEXT_LOST;
             }
             else
             {
                 return EGL_BAD_ALLOC;
             }
         }
         d3d11::SetDebugName(mOffscreenTexture, "Offscreen texture");
         // EGL_ANGLE_surface_d3d_texture_2d_share_handle requires that we store a share handle for the client
         if (useSharedResource)
         {
             IDXGIResource *offscreenTextureResource = NULL;
             result = mOffscreenTexture->QueryInterface(__uuidof(IDXGIResource), (void**)&offscreenTextureResource);
             // Fall back to no share handle on failure
             if (FAILED(result))
             {
                 ERR("Could not query offscreen texture resource: %08lX", result);
             }
             else
             {
                 result = offscreenTextureResource->GetSharedHandle(&mShareHandle);
                 if (FAILED(result))
                 {
                     mShareHandle = NULL;
                     ERR("Could not get offscreen texture shared handle: %08lX", result);
                 }
             }
         }
     }
     HRESULT result = device->CreateRenderTargetView(mOffscreenTexture, NULL, &mOffscreenRTView);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mOffscreenRTView, "Offscreen render target");
     result = device->CreateShaderResourceView(mOffscreenTexture, NULL, &mOffscreenSRView);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mOffscreenSRView, "Offscreen shader resource");
     if (mDepthBufferFormat != GL_NONE)
     {
         D3D11_TEXTURE2D_DESC depthStencilDesc = {0};
         depthStencilDesc.Width = backbufferWidth;
         depthStencilDesc.Height = backbufferHeight;
         depthStencilDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mDepthBufferFormat);
         depthStencilDesc.MipLevels = 1;
         depthStencilDesc.ArraySize = 1;
         depthStencilDesc.SampleDesc.Count = 1;
         depthStencilDesc.SampleDesc.Quality = 0;
         depthStencilDesc.Usage = D3D11_USAGE_DEFAULT;
         depthStencilDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
         depthStencilDesc.CPUAccessFlags = 0;
         depthStencilDesc.MiscFlags = 0;
         result = device->CreateTexture2D(&depthStencilDesc, NULL, &mDepthStencilTexture);
         if (FAILED(result))
         {
             ERR("Could not create depthstencil surface for new swap chain: 0x%08X", result);
             release();
             if (d3d11::isDeviceLostError(result))
             {
                 return EGL_CONTEXT_LOST;
             }
             else
             {
                 return EGL_BAD_ALLOC;
             }
         }
         d3d11::SetDebugName(mDepthStencilTexture, "Depth stencil texture");
         result = device->CreateDepthStencilView(mDepthStencilTexture, NULL, &mDepthStencilDSView);
         ASSERT(SUCCEEDED(result));
         d3d11::SetDebugName(mDepthStencilDSView, "Depth stencil view");
     }
     mWidth = backbufferWidth;
     mHeight = backbufferHeight;
     if (previousOffscreenTexture != NULL)
     {
         D3D11_BOX sourceBox = {0};
         sourceBox.left = 0;
         sourceBox.right = std::min(previousWidth, mWidth);
         sourceBox.top = std::max(previousHeight - mHeight, 0);
         sourceBox.bottom = previousHeight;
         sourceBox.front = 0;
         sourceBox.back = 1;
         ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
         const int yoffset = std::max(mHeight - previousHeight, 0);
         deviceContext->CopySubresourceRegion(mOffscreenTexture, 0, 0, yoffset, 0, previousOffscreenTexture, 0, &sourceBox);
         previousOffscreenTexture->Release();
         if (mSwapChain)
         {
             swapRect(0, 0, mWidth, mHeight);
         }
     }
     return EGL_SUCCESS;
 }
 EGLint SwapChain11::resize(EGLint backbufferWidth, EGLint backbufferHeight)
 {
     ID3D11Device *device = mRenderer->getDevice();
     if (device == NULL)
     {
         return EGL_BAD_ACCESS;
     }
     // Can only call resize if we have already created our swap buffer and resources
     ASSERT(mSwapChain && mBackBufferTexture && mBackBufferRTView);
     if (mBackBufferTexture)
     {
         mBackBufferTexture->Release();
         mBackBufferTexture = NULL;
     }
     if (mBackBufferRTView)
     {
         mBackBufferRTView->Release();
         mBackBufferRTView = NULL;
     }
     // Resize swap chain
     DXGI_FORMAT backbufferDXGIFormat = gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat);
     HRESULT result = mSwapChain->ResizeBuffers(2, backbufferWidth, backbufferHeight, backbufferDXGIFormat, 0);
     if (FAILED(result))
     {
         ERR("Error resizing swap chain buffers: 0x%08X", result);
         release();
         if (d3d11::isDeviceLostError(result))
         {
             return EGL_CONTEXT_LOST;
         }
         else
         {
             return EGL_BAD_ALLOC;
         }
     }
     result = mSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&mBackBufferTexture);
     ASSERT(SUCCEEDED(result));
     if (SUCCEEDED(result))
     {
         d3d11::SetDebugName(mBackBufferTexture, "Back buffer texture");
     }
     result = device->CreateRenderTargetView(mBackBufferTexture, NULL, &mBackBufferRTView);
     ASSERT(SUCCEEDED(result));
     if (SUCCEEDED(result))
     {
         d3d11::SetDebugName(mBackBufferRTView, "Back buffer render target");
     }
     return resetOffscreenTexture(backbufferWidth, backbufferHeight);
 }
 EGLint SwapChain11::reset(int backbufferWidth, int backbufferHeight, EGLint swapInterval)
 {
     ID3D11Device *device = mRenderer->getDevice();
     if (device == NULL)
     {
         return EGL_BAD_ACCESS;
     }
     // Release specific resources to free up memory for the new render target, while the
     // old render target still exists for the purpose of preserving its contents.
     if (mSwapChain)
     {
         mSwapChain->Release();
         mSwapChain = NULL;
     }
     if (mBackBufferTexture)
     {
         mBackBufferTexture->Release();
         mBackBufferTexture = NULL;
     }
     if (mBackBufferRTView)
     {
         mBackBufferRTView->Release();
         mBackBufferRTView = NULL;
     }
     mSwapInterval = static_cast<unsigned int>(swapInterval);
     if (mSwapInterval > 4)
     {
         // IDXGISwapChain::Present documentation states that valid sync intervals are in the [0,4] range
         return EGL_BAD_PARAMETER;
     }
     // EGL allows creating a surface with 0x0 dimension, however, DXGI does not like 0x0 swapchains
     if (backbufferWidth < 1 || backbufferHeight < 1)
     {
         releaseOffscreenTexture();
         return EGL_SUCCESS;
     }
     if (mWindow)
     {
         // We cannot create a swap chain for an HWND that is owned by a different process
         DWORD currentProcessId = GetCurrentProcessId();
         DWORD wndProcessId;
         GetWindowThreadProcessId(mWindow, &wndProcessId);
         if (currentProcessId != wndProcessId)
         {
             ERR("Could not create swap chain, window owned by different process");
             release();
             return EGL_BAD_NATIVE_WINDOW;
         }
         IDXGIFactory *factory = mRenderer->getDxgiFactory();
         DXGI_SWAP_CHAIN_DESC swapChainDesc = {0};
         swapChainDesc.BufferCount = 2;
         swapChainDesc.BufferDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat);
         swapChainDesc.BufferDesc.Width = backbufferWidth;
         swapChainDesc.BufferDesc.Height = backbufferHeight;
         swapChainDesc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
         swapChainDesc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
         swapChainDesc.BufferDesc.RefreshRate.Numerator = 0;
         swapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
         swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
         swapChainDesc.Flags = 0;
         swapChainDesc.OutputWindow = mWindow;
         swapChainDesc.SampleDesc.Count = 1;
         swapChainDesc.SampleDesc.Quality = 0;
         swapChainDesc.Windowed = TRUE;
         HRESULT result = factory->CreateSwapChain(device, &swapChainDesc, &mSwapChain);
         if (FAILED(result))
         {
             ERR("Could not create additional swap chains or offscreen surfaces: %08lX", result);
             release();
             if (d3d11::isDeviceLostError(result))
             {
                 return EGL_CONTEXT_LOST;
             }
             else
             {
                 return EGL_BAD_ALLOC;
             }
         }
         result = mSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&mBackBufferTexture);
         ASSERT(SUCCEEDED(result));
         d3d11::SetDebugName(mBackBufferTexture, "Back buffer texture");
         result = device->CreateRenderTargetView(mBackBufferTexture, NULL, &mBackBufferRTView);
         ASSERT(SUCCEEDED(result));
         d3d11::SetDebugName(mBackBufferRTView, "Back buffer render target");
     }
     // If we are resizing the swap chain, we don't wish to recreate all the static resources
     if (!mPassThroughResourcesInit)
     {
         mPassThroughResourcesInit = true;
         initPassThroughResources();
     }
     return resetOffscreenTexture(backbufferWidth, backbufferHeight);
 }
 void SwapChain11::initPassThroughResources()
 {
     ID3D11Device *device = mRenderer->getDevice();
     ASSERT(device != NULL);
     // Make sure our resources are all not allocated, when we create
     ASSERT(mQuadVB == NULL && mPassThroughSampler == NULL);
     ASSERT(mPassThroughIL == NULL && mPassThroughVS == NULL && mPassThroughPS == NULL);
     D3D11_BUFFER_DESC vbDesc;
     vbDesc.ByteWidth = sizeof(d3d11::PositionTexCoordVertex) * 4;
     vbDesc.Usage = D3D11_USAGE_DYNAMIC;
     vbDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
     vbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
     vbDesc.MiscFlags = 0;
     vbDesc.StructureByteStride = 0;
     HRESULT result = device->CreateBuffer(&vbDesc, NULL, &mQuadVB);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mQuadVB, "Swap chain quad vertex buffer");
     D3D11_SAMPLER_DESC samplerDesc;
     samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
     samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
     samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
     samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
     samplerDesc.MipLODBias = 0.0f;
     samplerDesc.MaxAnisotropy = 0;
     samplerDesc.ComparisonFunc = D3D11_COMPARISON_NEVER;
     samplerDesc.BorderColor[0] = 0.0f;
     samplerDesc.BorderColor[1] = 0.0f;
     samplerDesc.BorderColor[2] = 0.0f;
     samplerDesc.BorderColor[3] = 0.0f;
     samplerDesc.MinLOD = 0;
     samplerDesc.MaxLOD = D3D11_FLOAT32_MAX;
     result = device->CreateSamplerState(&samplerDesc, &mPassThroughSampler);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mPassThroughSampler, "Swap chain pass through sampler");
     D3D11_INPUT_ELEMENT_DESC quadLayout[] =
     {
         { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
         { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 8, D3D11_INPUT_PER_VERTEX_DATA, 0 },
     };
     result = device->CreateInputLayout(quadLayout, 2, g_VS_Passthrough, sizeof(g_VS_Passthrough), &mPassThroughIL);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mPassThroughIL, "Swap chain pass through layout");
     result = device->CreateVertexShader(g_VS_Passthrough, sizeof(g_VS_Passthrough), NULL, &mPassThroughVS);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mPassThroughVS, "Swap chain pass through vertex shader");
     result = device->CreatePixelShader(g_PS_PassthroughRGBA, sizeof(g_PS_PassthroughRGBA), NULL, &mPassThroughPS);
     ASSERT(SUCCEEDED(result));
     d3d11::SetDebugName(mPassThroughPS, "Swap chain pass through pixel shader");
 }
 // parameters should be validated/clamped by caller
 EGLint SwapChain11::swapRect(EGLint x, EGLint y, EGLint width, EGLint height)
 {
     if (!mSwapChain)
     {
         return EGL_SUCCESS;
     }
     ID3D11Device *device = mRenderer->getDevice();
     ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
     // Set vertices
     D3D11_MAPPED_SUBRESOURCE mappedResource;
     HRESULT result = deviceContext->Map(mQuadVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
     if (FAILED(result))
     {
         return EGL_BAD_ACCESS;
     }
     d3d11::PositionTexCoordVertex *vertices = static_cast<d3d11::PositionTexCoordVertex*>(mappedResource.pData);
     // Create a quad in homogeneous coordinates
     float x1 = (x / float(mWidth)) * 2.0f - 1.0f;
     float y1 = (y / float(mHeight)) * 2.0f - 1.0f;
     float x2 = ((x + width) / float(mWidth)) * 2.0f - 1.0f;
     float y2 = ((y + height) / float(mHeight)) * 2.0f - 1.0f;
     float u1 = x / float(mWidth);
     float v1 = y / float(mHeight);
     float u2 = (x + width) / float(mWidth);
     float v2 = (y + height) / float(mHeight);
     d3d11::SetPositionTexCoordVertex(&vertices[0], x1, y1, u1, v1);
     d3d11::SetPositionTexCoordVertex(&vertices[1], x1, y2, u1, v2);
     d3d11::SetPositionTexCoordVertex(&vertices[2], x2, y1, u2, v1);
     d3d11::SetPositionTexCoordVertex(&vertices[3], x2, y2, u2, v2);
     deviceContext->Unmap(mQuadVB, 0);
     static UINT stride = sizeof(d3d11::PositionTexCoordVertex);
     static UINT startIdx = 0;
     deviceContext->IASetVertexBuffers(0, 1, &mQuadVB, &stride, &startIdx);
     // Apply state
     deviceContext->OMSetDepthStencilState(NULL, 0xFFFFFFFF);
     static const float blendFactor[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
     deviceContext->OMSetBlendState(NULL, blendFactor, 0xFFFFFFF);
     deviceContext->RSSetState(NULL);
     // Apply shaders
     deviceContext->IASetInputLayout(mPassThroughIL);
     deviceContext->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
     deviceContext->VSSetShader(mPassThroughVS, NULL, 0);
     deviceContext->PSSetShader(mPassThroughPS, NULL, 0);
     deviceContext->GSSetShader(NULL, NULL, 0);
     // Apply render targets
     mRenderer->setOneTimeRenderTarget(mBackBufferRTView);
     // Set the viewport
     D3D11_VIEWPORT viewport;
     viewport.TopLeftX = 0;
     viewport.TopLeftY = 0;
     viewport.Width = mWidth;
     viewport.Height = mHeight;
     viewport.MinDepth = 0.0f;
     viewport.MaxDepth = 1.0f;
     deviceContext->RSSetViewports(1, &viewport);
     // Apply textures
     deviceContext->PSSetShaderResources(0, 1, &mOffscreenSRView);
     deviceContext->PSSetSamplers(0, 1, &mPassThroughSampler);
     // Draw
     deviceContext->Draw(4, 0);
     result = mSwapChain->Present(mSwapInterval, 0);
     if (result == DXGI_ERROR_DEVICE_REMOVED)
     {
         HRESULT removedReason = device->GetDeviceRemovedReason();
         ERR("Present failed: the D3D11 device was removed: 0x%08X", removedReason);
         return EGL_CONTEXT_LOST;
     }
     else if (result == DXGI_ERROR_DEVICE_RESET)
     {
         ERR("Present failed: the D3D11 device was reset from a bad command.");
         return EGL_CONTEXT_LOST;
     }
     else if (FAILED(result))
     {
         ERR("Present failed with error code 0x%08X", result);
     }
     // Unbind
     static ID3D11ShaderResourceView *const nullSRV = NULL;
     deviceContext->PSSetShaderResources(0, 1, &nullSRV);
     mRenderer->unapplyRenderTargets();
     mRenderer->markAllStateDirty();
     return EGL_SUCCESS;
 }
 // Increments refcount on texture.
 // caller must Release() the returned texture
 ID3D11Texture2D *SwapChain11::getOffscreenTexture()
 {
     if (mOffscreenTexture)
     {
         mOffscreenTexture->AddRef();
     }
     return mOffscreenTexture;
 }
 // Increments refcount on view.
 // caller must Release() the returned view
 ID3D11RenderTargetView *SwapChain11::getRenderTarget()
 {
     if (mOffscreenRTView)
     {
         mOffscreenRTView->AddRef();
     }
     return mOffscreenRTView;
 }
 // Increments refcount on view.
 // caller must Release() the returned view
 ID3D11ShaderResourceView *SwapChain11::getRenderTargetShaderResource()
 {
     if (mOffscreenSRView)
     {
         mOffscreenSRView->AddRef();
     }
     return mOffscreenSRView;
 }
 // Increments refcount on view.
 // caller must Release() the returned view
 ID3D11DepthStencilView *SwapChain11::getDepthStencil()
 {
     if (mDepthStencilDSView)
     {
         mDepthStencilDSView->AddRef();
     }
     return mDepthStencilDSView;
 }
 ID3D11Texture2D *SwapChain11::getDepthStencilTexture()
 {
     if (mDepthStencilTexture)
     {
         mDepthStencilTexture->AddRef();
     }
     return mDepthStencilTexture;
 }
 SwapChain11 *SwapChain11::makeSwapChain11(SwapChain *swapChain)
 {
     ASSERT(HAS_DYNAMIC_TYPE(rx::SwapChain11*, swapChain));
     return static_cast<rx::SwapChain11*>(swapChain);
 }
 void SwapChain11::recreate()
 {
     // possibly should use this method instead of reset
 }
 }

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gfx/angle/src/libGLESv2/renderer/SwapChain11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/SwapChain11.cpp